I was listening to the Dune (Extended Score) today and there is a song called "Departure" Track 9 that sounds so similar to a theme on the Blue Velvet soundtrack (it occurs after 20 seconds into the song).

I know that for Blue Velvet David Lynch's direction/inspiration for Angelo was the classic composer Dmitri Shostakovich (you can hear the Blue Velvet theme on one of his classical albums).

This song on Dune sounds very similar so it wouldn't suprise me if Lynch gave Toto some direction regarding Shostakovich.

I'm a bit surprised that David Lynch was able to make Blue Velvet (also produced by De Laurentiis) after Dune's commercial and critical failure, though I am glad, of course.

I imagine David was in Director's jail after that movie and couldn't get another studio picture off the ground. But I suspect he signed a two picture deal with Dino and Raffaella before Dune was released and when it came time to make Blue Velvet, the budget was so small (and the fact that they had taken Dune away from him in the cutting room) that they just left David alone to make the movie that he wanted to make.